CN102381313A - Method for controlling operation of an electric oil pump - Google Patents
Method for controlling operation of an electric oil pump Download PDFInfo
- Publication number
- CN102381313A CN102381313A CN2011102309016A CN201110230901A CN102381313A CN 102381313 A CN102381313 A CN 102381313A CN 2011102309016 A CN2011102309016 A CN 2011102309016A CN 201110230901 A CN201110230901 A CN 201110230901A CN 102381313 A CN102381313 A CN 102381313A
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- hev
- oil pump
- electric oil
- controller
- drive axle
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000009183 running Effects 0.000 claims description 35
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000007788 roughening Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 134
- 239000010721 machine oil Substances 0.000 description 27
- 238000001816 cooling Methods 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000004087 circulation Effects 0.000 description 6
- 239000003570 air Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000005183 dynamical system Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18018—Start-stop drive, e.g. in a traffic jam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
- F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
- G16Z99/00—Subject matter not provided for in other main groups of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
- B60L2240/485—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/107—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
A system and method is provided for controlling operation of an electric oil pump in a hybrid electric vehicle (HEV). The HEV includes an engine and a transaxle including an electric motor coupled to a traction battery. A commanded speed for the electric oil pump is determined and whether the engine in the HEV is in an off state is determined. When the engine is in the off state, the electric oil pump is controlled to operate at the commanded speed.
Description
Technical field
The present invention relates to the control method of the electric oil pump in the motor vehicle driven by mixed power.
Background technology
Hybrid electric vehicle (HEV) generally includes driving engine (for example explosive motor (ICE)) and electro-motor.For example, HEV can be series hybrid-power elec. vehicle (SHEV), parallelly connected hybrid electric vehicle (PHEV) or parallel/series hybrid electric vehicle (PSHEV).
Series hybrid-power elec. vehicle (SHEV) is for having the vehicle of the driving engine (the most typical ICE of being) that is connected to motor (it provides electrical power to battery).Another motor that is called traction motor is by battery-operated.Traction motor among the SHEV is unique source of wheel torque.Between driving engine and drive wheel, there is not mechanical connection.
Parallel connection hybrid electric vehicle (PHEV) has driving engine (the most typical ICE of being) and works so that the electro-motor of traction wheel torque with powered vehicle to be provided with ICE.In addition, the motor among the PHEV can be used as electrical generator and thinks battery charge to recover the reproducibility energy.
Parallel/series hybrid electric vehicle (PSHEV) has the characteristic of PHEV and SHEV configuration and sometimes is called the configuration of " separation type " (" split ") parallel/series.In one in the PSHEV of a plurality of types configuration, driving engine is mechanically connected to two motors with the mode of planetary gear set drives bridge.First motor (electrical generator) is connected to sun gear.Driving engine is connected to planetary gear carrier.Second electro-motor (traction motor) is connected to annular (output) gear via other transmission device in the drive axle.Engine torque can drive electrical generator and think battery charge.Electrical generator also can be contributed necessary wheel (output shaft) moment of torsion.Traction motor is used to contribute vehicle torque and recovers the reproducibility braking energy with rechargeable battery.In this configuration, electrical generator can optionally provide the reaction torque that can be used for controlling engine speed.
Between the HEV on-stream period, the multiple assembly that produces among heat and the HEV need lubricate.Therefore, engine-driven drive axle pump can be provided for cooling off and lubricated HEV in multiple power driving module.Yet, as HEV during just at power operation, tail-off and therefore engine-driven drive axle pump can not turn round.Therefore, can carry out cooling and the lubrication needs that auxiliary motor-drive pump is used for for example satisfying HEV when tail-off.
Summary of the invention
According to an aspect of the present invention; The method of the running of the electric oil pump that the hybrid electric vehicle (HEV) that provides a kind of control to have driving engine and drive axle is interior; Wherein drive axle has electro-motor, and this method comprises that the control electric oil pump is with the instruction rotation speed operation when driving engine is in closed condition.
According to one embodiment of present invention, wherein based on coming the horsepower rating loss from the estimated power loss of at least one in the motor in the drive axle, electrical generator and the power supply changeover device in the HEV in the drive axle.
According to one embodiment of present invention, further comprise based on the loss in efficiency in the HEV confirm the pump time of run and control electric oil pump in the running between with the instruction rotation speed operation.
According to one embodiment of present invention, further comprise and obtain at least one temperature levels and confirm the instruction rotating speed based on temperature levels.
According to one embodiment of present invention, the temperature of at least one in the ambient air of driving machine oil in the motor in the temperature levels indication drive axle, the electrical generator in the drive axle, the HEV and HEV outside wherein.
According to one embodiment of present invention, further comprise based on the temperature levels in the HEV confirm the pump time of run and control electric oil pump in the running between with the instruction rotation speed operation.
According to one embodiment of present invention, further comprise the operating mode and at least one temperature levels of confirming HEV, and confirm the instruction rotating speed based on the operating mode of temperature levels and HEV.
According to one embodiment of present invention, wherein controlling electric oil pump comprises and provides drive axle machine oil with the assembly in lubricated and the cooling drive axle.
According to a further aspect of the invention; The system of the running of the electric oil pump that the hybrid electric vehicle (HEV) that provides a kind of control to have driving engine and drive axle is interior; Wherein drive axle has electro-motor; This system comprises: at least one logical device, configuration be used for confirming instruction rotating speed and control electric oil pump that whether the driving engine in the HEV be in closed condition and electric oil pump when driving engine is in closed condition to instruct rotation speed operation.
Description of drawings
The scheme drawing of hybrid electric vehicle that Fig. 1 comprises electric oil pump according to an embodiment of the invention for explanation and is used to control the system of electric oil pump running.
Fig. 2 controls the diagram of circuit of the method for electric oil pump running among the HEV according to an embodiment of the invention for explanation.
Fig. 3 controls the diagram of circuit of the method for the electric oil pump running among the HEV according to another embodiment of the present invention for explanation.
The specific embodiment
Embodiments of the invention comprise the method and system of the electric oil pump running that is used for controlling hybrid electric vehicle (HEV).Vehicle can be and comprises that electric oil pump is to provide the HEV of the lubricated any kind of drive axle.For example, vehicle can be parallel/series hybrid electric vehicle (PSHEV), plug-in hybrid electric vehicle, hybrid power fuel cell electric vehicle (FCEV) or changes battery type elec. vehicle (battery-replacement electric vehicle).
With reference to figure 1, system 10 is provided for controlling the running of the electric oil pump 12 in the hybrid electric vehicle (HEV) 14.System 10 among Fig. 1 is shown as with the dynamical system of parallel/series hybrid electric vehicle (PSHEV) and combines.Yet system 10 can combine with other dynamical system configuration as implied above, for example series hybrid-power elec. vehicle (SHEV) or parallelly connected hybrid electric vehicle (PHEV).With the mode descriptive system 10 and the many aspects of its method of operation of summarizing with promotion understanding system 10 and method.
As illustrated in fig. 1, HEV 14 comprises driving engine 16, storage battery 18 (hereinafter is claimed " battery ") and drive wheel 20.Driving engine 16 optionally provides power to drive wheel 20 so that can drive HEV 14 with battery 18.Driving engine 16 among Fig. 1 is shown as the explosive motor (ICE) that consumes gasoline, diesel oil or be used to drive other combustible fuel of driving engine 16.
As shown in fig. 1, HEV 14 comprises drive axle 22, and it is similar to the driving device in the conventional power actuated vehicle.Drive axle 22 comprises that power separates driving device 24, electrical generator 26, electro-motor 28 and power transmission tooth wheels 30.Drive axle 22 is arranged between drive wheel 20 and the driving engine 16 to realize the transmission of power to drive wheel 20.Electro-motor 28 and two motors of electrical generator 26 for the composition electric machine.
As in Fig. 1, describing, the power of drive axle 22 separates driving device 24 and mechanically connects driving engine 16 and electrical generator 26.Power separate driving device 24 can be have Ring gear 32, the compound planet gear of pinion carrier 34, planetary wheel 36 and sun gear 38.Engine drive axle 40 can connect driving engine 16 and pinion carrier 34 drivingly.Generator drive shaft 42 mechanically connects electrical generator 26 and sun gear 38.Alternately, power separates gear cluster and the driving device that driving device 24 can comprise other type that is used to connect driving engine 16 and electrical generator 26.
In running condition, power separate driving device 24, electrical generator 26 and electro-motor 28 and produce heat and need cooling.The lubricated level of separating driving device 24, electrical generator 26 and electro-motor 28 along with power descends, and the loss in efficiency in the drive axle 22 increases and need extra lubricating be provided to drive axle 22.Loss in efficiency between electro-motor 28 and the electrical generator 26 can be described as " P
Loss".Electro-motor 28 for friction speed and moment of torsion can be confirmed P by experience with electrical generator 26
Loss
As in Fig. 1, describing, HEV 14 comprises control unit of engine (ECU) 44.ECU 44 can comprise electronic engine throttle-valve control (ETC) system.In running condition, ECU 44 control driving engines 16 and driving engine 16 output torques are to being connected to the engine drive axle 40 that power separates driving device 24.Power separates driving device 24 and is passed to drive wheel 20 or electrical generator 26 from the power of driving engine 16 and with this power through power transfer gear cluster 30 through 40 receptions of engine drive axle.Except receiving the power from driving engine 16, power separates driving device 24 also can receive the power from electrical generator 26.
With reference to figure 1, electrical generator 26 can be used as electro-motor or mechanical energy converted in the machine of electric energy one or both of.When operating as electro-motor, electrical generator 26 output torques are to being connected to the generator drive shaft 42 that power separates driving device 24 (moment of torsion that it can near Ring gear 32 is passed to the moment of torsion input side of gear cluster 30).Because sun gear 38 act as the torque reaction element, electrical generator 26 can be controlled the speed of driving engine 16.Operate as when converting mechanical energy the machine of electric energy into electrical generator 26 output electric energy to high pressure buses.High-voltage bus receives the electric energy from electrical generator 26.One or more DC-AC power supply changeover device (not shown)s DC power source conversion of spontaneous motor 26 in the future are the AC power supplies that is suitable for driving polyphase induction electro-motor 28.In addition, one or more AC-DC power supply changeover devices in the future the AC power supplies of spontaneous motor 26 convert the dc voltage power supply that is suitable for rechargeable battery 18 into.
As shown in Figure 1, HEV 14 comprises Mechanical Driven oil pump 46.Mechanical Driven oil pump 46 pumping drive axle machine oil are used for cooling and lubricated drive axle 22.As shown in, HEV 14 can comprise that pump driver gear 48, hydraulic pump drive gear 50 and pump axle drive shaft 52 will be will be passed to Mechanical Driven oil pump 46 from the moment of torsion of driving engine axle drive shaft 40.In running condition, driving engine 16 rotary engine axle drive shafts 40 and engine drive axle 40 rotary pump driven wheels 48.Gear 48 and 50 engagements are so that the rotation of pump driver gear 48 comes rotating hydraulic pump driver gear 50 and pump axle drive shaft 52.Therefore, when driving engine 16 output torques to engine drive axle 40, Mechanical Driven oil pump 46 is driven.
As shown in fig. 1, electric oil pump 12 pumping drive axle machine oil or other lubricant are used for cooling and lubricated drive axle 22.The running that can control electric oil pump 12 is with lubricated level of the drive axle that variation is provided in HEV 14 or grade., the drive axle 22 among the HEV 14 possibly have enough lubricating before torque applications to drive axle 22.The running that can control electric oil pump 12 is to provide different lubricated grades in HEV 14.Separate although electric oil pump 12 is shown as in Fig. 1 with drive axle 22, depend on the configuration of HEV 14, electric oil pump 12 can be the part of drive axle 22.
As shown in fig. 1, HEV 14 comprises oil pan tray 54.Oil pan tray 54 storing driver bridge machine oil or be used for other lubricating liquid of drive axle 22.In running condition, electric oil pump 12 and Mechanical Driven oil pump 46 obtain drive axle machine oil or other lubricating liquid and it are passed to the multiple assembly in the drive axle 22 from oil pan tray 54.Although oil pan tray 54 is shown as the part of drive axle 22 in Fig. 1, depend on the configuration of HEV 14, oil pan tray 54 can separate with drive axle 22.
As shown in fig. 1, HEV 14 can comprise H Exch 56.H Exch 56 can increase heat to the HEV 14 drive axle machine oil or remove heat from it.For example, H Exch 56 can be machine oil-air heat exchanger.Flow automatically the in the future heat of the drive axle machine oil that passes H Exch 56 of machine oil-air heat exchanger is passed to the air that stream passes H Exch 56.In addition, machine oil-air heat exchanger can receive the heat of the air that passes H Exch 56 of flowing automatically and heat is increased to the drive axle machine oil that stream passes H Exch 56.
As shown in Figure 1, HEV 14 can be included in the boiler check valve 58 between H Exch 56 and the electric oil pump 12.If when Mechanical Driven oil pump 46 turning round or lubricated/when cooling loop was pressurized, boiler check valve 58 anti-fluid were passed electric oil pump 12 loops.
Between on-stream period, Mechanical Driven oil pump 46 and electric oil pump 12 circulations are passed fluid path (shown in Fig. 1) and the multiple drive axle assemblies to the HEV 14 from the drive axle machine oil of oil pan tray 54.In addition, in case drive axle machine oil leaves H Exch 56, drive axle machine oil is recycled and runs through whole drive axle 22 with the multiple drive axle assemblies in lubricated and the cooling HEV 14.Drive axle assemblies in the HEV 14 can comprise that power separates other dynamical system element in driving device 24 and the HEV 14, for example electro-motor 28 and electrical generator 26.For example, drive axle machine oil can conduct heat from the rotor of motor 28 or stator winding with cooling motor 28.In another example, when power separates driving device 24 through axle 40 and 42 transmission during from the moment of torsion of driving engine 16 or power, Mechanical Driven oil pump 46 can distribute drive axle machine oil to drive axle 22 to prevent damage or the deterioration to drive axle 22.
Continuation is with reference to figure 1, and system 10 comprises logical device (LD) or controller 60.Controller or LD 60 can implement through polytype electronic machine and/or microprocessor computing machine or controller or their combination.In order to carry out the method for control electric oil pump running, controller 60 can be carried out through this method and embed or coding and be stored in calculation procedure or the algorithm in volatibility and/or the non-volatile storage.Alternately, in the logic sum gate array of logic codified on the one or more IC chips of storage.In one example, memory device can be computer-readable memory, and its storage embeds or calculation of coding program or algorithm through method.Memory device can be stored various working or the relevant information of assembly (for example driving engine 16 and drive axle 22) of HEV 14.For example, memory device can be stored the two moment of torsion and rotary speed data of electro-motor 28, electrical generator 26 or electro-motor 28 and electrical generator 26.In addition, memory device can store predetermined rotary speed threshold value, the electric oil pump 12 of the driving engine 16 in the HEV 14 predetermined idling speed, be used for the predetermined minimum time of operation of electrically driven oil pump 12 and the predetermined threshold value temperature of drive axle machine oil.Memory device 34 can be the part of controller 60.Yet memory device 34 can be positioned at HEV 14 can be by any suitable position of controller 60 visits.
Be used to control the LD of electric oil pump 12 or the combination that controller 60 is shown as hybrid power control unit (HCU) 62 and pump controller 64.Being combined in hereinafter referred to as of HCU 62 and pump controller 64 " controller ", its Reference numeral is 60.Although controller or LD 60 can comprise a plurality of controllers of the form of a plurality of hardware devices or a plurality of software controllers of one or more hardware device in-to-ins, LD or controller 60 also can be the running of single hardware device with control motor oil pump 12.In addition, depend on the configuration of system 10, controller 60 can comprise additional hardware equipment or software controller, for example vehicle system controller (VSC), powertrain control module (PCM), ECU 44 or their combination.VSC among Fig. 1 and PCM are shown as and are combined as individual equipment and hereinafter referred to as " VSC/PCM ", and its Reference numeral is 65.
VSC/PCM 65 can directly control or the controller through the separation that moves down in the management of VSC/PCM 65 control comes controlling and driving bridge 22, driving engine 16 and battery 18.For example, VSC/PCM65 can communicate by letter with ECU 44 with control driving engine 16.Similarly, VSC/PCM 65 can communicate by letter with battery control module (BCM) 66 with control battery 18.In another example, VSC/PCM 65 can communicate by letter with controlling and driving bridge 22 with hybrid power control unit (HCU) 62.In such example, HCU 62 can comprise one or more controllers of drive axle 22, for example drive axle control module (TCM) 68.Depend on the configuration of system 10, controller 60 can comprise TCM 68.TCM 68 configurations are used for the assembly in the controlling and driving bridge 22, for example electrical generator 26 and electro-motor 28.In addition, TCM 68 can be controller 60 provides data or information with control electric oil pump 12.
VSC/PCM 65 and the various modes of TCM 68 runnings with controlling and driving bridge 22, the for example running of the motorized motions pattern of HEV14.The motorized motions pattern of HEV 14 allows electro-motor 28 to operate as motor, electrical generator or the two is to provide electric energy with running HEV 14.For example, the electric model of HEV 14 can be used in drive wheels 20 and drives HEV 14.
The information that VSC/PCM 65 and TCM 68 can store relevant HEV 14 previous operation modes, the for example previous driving loop-around data of HEV 15.The various modes of drive axle 22 can be communicated to controller 60 or provide to the signal of HCU 62 via drive axle 22 and directly be communicated to controller 60 via TCM 68.For example, controller 60 can obtain to comprise rotating speed, the motor rotary speed ω of driving engine 16
Mot, motor torsional moment τ
Mot, generator speed ω
Gen, generator torque τ
Gen, power of battery P
BattWith motor and generator power loss P
LossData or information.VSC/PCM 65 can with BCM 66, ECU satellite 44, TCM 68 or their combined communication so that this data or information to controller 60 to be provided.Alternately, controller 60 can calculate this data or information based on the multiple incoming signal from VSC/PCM 65, BCM 66, ECU 44, TCM 68 or their combination.
As shown in fig. 1, HEV 14 can comprise one or more sensors 70.A plurality of parameters that sensor 70 close driving engines 16 are provided with sensing driving engine 16.Sensor 70 provides the engine running data to ECU 44 and/or VSC/PCM 65.As shown in Figure 1, VSC/PCM 65 (its can be separately or with other unit construction of controller 60) can receive and handle signal from sensor 70, ECU44, drive axle 22, TCM 68, BCM 66 or their combination to obtain data or the information relevant for driving engine 16.
Any suitable device can provide information to the controller 60 of the rotating speed of indication driving engine 16 among the HEV 14.For example, tachogen 70 can provide rotating speed to the controller 60 of driving engine 16.Tachogen 70 can be engine position sensor, and it is to the equi-spaced pulses at each living predetermined number of changing the line of production of HEV14 inside crankshaft.VSC/PCM 65 can receive rotating speed and transmission rotating speed to the controller 60 of spacing pulse to confirm driving engine 16 from tachogen 70.The rotating speed of driving engine 16 can be with rev/min (RPM) or any other suitable formal representation.
Any suitable device all can provide the rotating speed " ω of indication electro-motor 28 among the HEV 14
Mot" information to controller 60.In one example, TCM 68 can provide motor rotary speed " ω
Mot" to controller 60, it can be based on the instruction to electro-motor 28.In another example, HEV 14 can comprise magslip (resolver).The position of magslip sensing electro-motor 28 rotors and generation have signals of rotating transformer embedded or coding rotor position information within it.Controller 60 and/or TCM 68 can receive signals of rotating transformer with a plurality of values of obtaining electro-motor 28 (L for example
d, L
q, R
sAnd λ
Pm) and operating mode (V
d,, V
qAnd ω).Based on the value and the operating mode of electro-motor 28, controller 60 and/or TCM 68 can confirm the rotating speed " ω of electro-motor 28
Mot".
Any suitable device all can provide indication electro-motor 28 to export the moment of torsion " τ that power transmits gear cluster 30 among the HEV 14
Mot" information to controller 60.For example, TCM 68 can confirm motor torsional moment " τ
Mot" and transmit embedded or coding has a motor torsional moment " τ
Mot" signal to controller 60.TCM 60 can confirm motor torsional moment " τ
Mot", it is that motor 28 is by the instruction motor moment of torsion of instruction to carry.
Any suitable device all can provide the rotating speed " ω of indication electrical generator 26 among the HEV 14
Gen" information to controller 60.In one example, TCM 68 can provide generator speed " ω based on the instruction to electrical generator 26
Gen" to controller 60.Alternately, but the position of electrical generator magslip (not shown) sensing generator drive shaft 42 and generation have embedded or the coding electrical generator signals of rotating transformer of generator speed information within it.Controller 60 and/or TCM 68 can obtain and handle from the various values of the electrical generator 26 of electrical generator signals of rotating transformer and operating mode to confirm the speed " ω of electrical generator 26
Gen".
Any suitable device among the HEV 14 all can provide the moment of torsion " τ between indication electrical generator 26 and the generator drive shaft 42
Gen" information to controller 60.For example, TCM 68 can confirm generator torque " τ
Gen" and transmit embedded or coding has a generator torque " τ
Gen" signal to controller 60.TCM 68 can confirm generator torque " τ
Gen", it is delivered to the instruction generator torque of generator drive shaft 42 by instruction for electrical generator 26.
In the sensor among Fig. 1 at least one can be temperature sensor.Temperature sensor can be used for the temperature of the temperature levels of sensing indication driving engine 16.For example, but the sensor signal that the temperature of gasoline lid and transmission have this temperature in the temperature sensor sensing driving engine 16 to VSC/PCM 65 and/or ECU 44.In another example, temperature sensor can according to the engine coolant that passes the heater core in the HEV 14 directly sensing temperature to obtain the temperature levels of driving engine 16.VSC/PCM 65 can handle from the sensor signal of temperature sensor to confirm temperature levels.For example, VSC/PCM65 can estimate or confirm the temperature levels of driving engine 16 based on the temperature levels of the cylinder cover in the driving engine 16.Controller 60 can receive the temperature levels from VSC/PCM 65.In addition, controller 60 can obtain the out of Memory from VSC/PCM 65, for example the ambient temperature of HEV 14 outsides.
With reference to figure 2, provide flow process Figure 80 generally so that the method step of electric oil pumps 12 runnings in the control HEV 14 to be described according to one embodiment of present invention.Except the step shown in Fig. 2, the logical device in the HEV14 or controller is able to programme extra step is arranged so that extra function to be provided.Although a plurality of steps shown in flow process Figure 80 seem to take place in chronological order, at least some in the step can different order take place, and some steps can be carried out simultaneously or not execution.
With reference to figure 2, the various aspects of in the argumentation method, understanding this method with assistance with reference to HEV 14 and its assembly of explanation among the figure 1.Can or be programmed into the method for operation that the software program that is fit among the HEV 14 in the programmable logic device (for example other controller among controller 60, hybrid power control unit (HCU) 62, VSC/PCM 65, pump controller 64, the HEV14 and their combination) is carried out the electric oil pump 12 among the control HEV 14 through computerized algorithm, machine executable code.
Rotating speed, motor rotary speed ω based on driving engine 16
Mot, motor torsional moment τ
Mot, generator speed ω
Gen, generator torque τ
GenOr their combination, it is radical, medium radical, medium and passive that previous operation mode can be categorized as.Radical operation mode can be indicated previous driving circulation high relatively moment of torsion of experience and the slow speed of revolution of HEV 14.Medium radical operation mode can be indicated previous driving circulation moderate relatively moment of torsion of experience and the high rotating speed of HEV 14.Medium operation mode can indicate the previous driving circulation experience of HEV 14 medium to low moment of torsion and medium to slow speed of revolution.The passiveness operation mode can be indicated the low relatively moment of torsion of previous driving circulation experience and relative slow speed of revolution of HEV 14.
Continue reference block 82, controller 60 can confirm whether HEV 14 is just operating at sensitive mode.Under the sensitive mode of HEV 14, the passenger among the HEV 14 can notice or experience noise, vibrations and the roughening (NVH) from electric oil pump 12 basically.Controller 60 can be based on the multiple operating parameters of HEV 14 (the for example rotating speed of driving engine 16, motor rotary speed ω
MotWith generator speed ω
Gen) confirm whether HEV 14 just operates under the sensitive mode.In addition, sensitive mode can be based on the signal with PRNDL location information (that is Parking,, reversing, neutral gear, go, gear shift that low velocity is driven selects information).For example, controller 60 can be separately based on gear shift select information or with rotating speed, the motor rotary speed ω of driving engine 16
MotWith generator speed ω
GenThe NVH level in the HEV 14 is confirmed in combination.For example, the controller 60 NVH level that can confirm to be in the gear that goes at HEV 14 is greater than the HVH level when HEV 14 is in Parking or neutral mode.In addition, controller 60 can be confirmed to convert forward mode into and to the NVH level that advance to drive with through a series of gears acceleration the time at drive axle 22.Along with owing to increase, discover from the NVH of electric oil pump 12 passengers that are difficult for by in the HEV 14 that can become from the NVH level of driving engine 16, electrical generator 26 and electro-motor 28.
At frame 84 places of flow process Figure 80, it confirms whether the driving engine 16 in the HEV 14 is in starting state.For example, the rotating speed of driving engine 16 can confirm whether the driving engine 16 in the HEV 14 is in starting state.Equally,, the rotating speed of driving engine 16 can think that driving engine 16 is in starting state when surpassing the desired speed threshold value.Alternately, the state that can confirm driving engine 16 is to confirm whether the driving engine 16 in the HEV 14 is in starting state.Controller 60 can be based on confirming from the signal of ECU 44, TCM 68 and/or VSC/PCM 65 whether the driving engine 16 in the HEV 14 is in starting state.
At frame 86 places, obtain one or more temperature levels.Temperature levels can comprise the temperature levels of driving engine 16, the temperature of the drive axle machine oil in the oil pan tray 54, temperature, power supply cooling system conditioner, the ambient temperature of HEV 14 outsides, other temperature levels of indication drive axle 22 interior generation heats or their combination of the power supply changeover device in the HEV 14.It is the AC power supplies that is used for operation of electrically driven motor 28 and/or electrical generator 26 that power supply changeover device in the HEV14 can be the DC power source conversion from battery 18.Controller 60 (it can comprise the HCU 6 that communicates by letter with pump controller 64) can obtain temperature levels separately or with VSC/PCM 65 combinations.
Continue reference block 86, temperature levels can be used in rotating speed and/or the electric oil pump 12 of confirming electric oil pump 12 and will under this rotating speed, how long turn round.For example, temperature levels can be directly proportional with the rotating speed of electric oil pump 12.Therefore, the instruction rotating speed of electric oil pump 12 can increase and increase along with temperature levels.When temperature levels increases, possibly need higher rate of cooling or remove heat from drive axle machine oil, so controller 60 can increase the instruction rotating speed of electric oil pump 12 via H Exch 56.Equally, the instruction rotating speed of electric oil pump 12 can reduce along with the reduction of temperature levels.The instruction rotating speed that can reduce electric oil pump 12 is to provide lower rate of cooling and to preserve the electric energy that uses from battery 18.
At frame 88 places, the one or more loss in efficiencyes among the acquisition HEV 14 or the level of egress of heat.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can obtain or can obtain with VSC/PCM 65 combinations the level of the egress of heat of HEV 14 separately.For example, controller 60 can come the horsepower rating loss based on the loss in efficiency of the estimation of the electro-motor in the HEV14 28, electrical generator 26 and power supply changeover device.The loss in efficiency of motor 28 and electrical generator 26 can be expressed as P
Loss
At frame 90 places, confirm the rotating speed of electric oil pump 12.The rotating speed that electric oil pump 12 is confirmed can be with reference to conduct instruction rotating speed.Frame 90 (shown in Fig. 2) can be corresponding to one group of step (shown in Fig. 3) of flow process Figure 100.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can make up the rotating speed of confirming electric oil pump 12 separately or with VSC/PCM 65.Whether controller 60 can be in the rotating speed that electric oil pump 12 is confirmed in one or more temperature levels, one or more loss in efficiency or egress of heat level or their combination in the one or more operation modes, HEV 14 of starting state, HEV 14 based on the driving engine in the HEV14 16.
Continue reference block 90, when HEV 14 experienced the radical operation mode of the relative high ambient temperature that comprises high moment of torsion and HEV 14 outsides, pump controller 64 can instruct electric oil pump 12 with high rotation speed operation.In another example, when HEV 14 experience comprised the medium radical operation mode of relative moderate environment temperature of medium torque, high car speed, mid power loss and HEV 14 outsides, pump controller 64 can instruct electric oil pump 12 with medium rotation speed operation.Can be based on the actual driving loop-around data that obtains between HEV 14 on-stream periods and confirm medium radical operation mode.In another example, when HEV14 experienced passive operation mode, pump controller 64 can instruct electric oil pump 12 to turn round with slow speed of revolution.When HEV 14 had low power loss and relative low temperature level at the fixed time, HEV 14 can experience passive operation mode.In another example, pump controller 64 can instruct electric oil pump 12 to turn round with slow speed of revolution continuously with mid power when running loss interim at the fixed time as HEV 14.
Refer again to frame 90, controller 60 can select or modify instruction speed with cooling that make great efforts to optimize drive axle 22 and/or lubricated and consume from the balance between the electric energy of battery 18.For example, controller 60 can confirm that the slow speed of revolution of electric oil pump 12 is an instruction speed, and it realizes balance between cooling and/or lubricated and consumed power.
Refer again to frame 90, the rotating speed of electric oil pump 12 can according to based on the required flow velocity of lubricated required minimum flow velocity, cooling drive axle 22 inner assemblies of the previous operation mode of HEV 14 and with the relevant flow velocity of target NVH level of the electric oil pump 12 that depends on HEV 14 runnings.For example, when HEV 14 will operate at the driving model to the noise-sensitive sent from electric oil pump 12, controller 60 can confirm to reduce the rotating speed of electric oil pump 12.Increase and increase from the noise of electric oil pump 12 rotating speed along with electric oil pump 12.Therefore, the NVH level in the HEV 14 can be directly proportional with the rotating speed of electric oil pump 12.The instruction rotating speed that controller 60 is confirmed can be based on lubricated drive axle machine oil flow velocity to prevent that significantly damage or deterioration drive axle 22 are required is provided.
Continue reference block 90, controller 60 can be based on the rotating speed of confirming electric oil pump 12 from the last time time of running of Mechanical Driven oil pump 46 or electric oil pump 12.For example, the instruction rotating speed of electric oil pump 12 can be inversely proportional to the time of last time cooling off and/or lubricating from drive axle 22.Therefore, controller 60 can increase and reduce to instruct rotating speed along with time of last time having turned round of self-pumping 12,46, because the cooling of drive axle 22 and/or lubricated demand maybe need be elongated and increase along with the time that last time having turned round of self-pumping 12,46 passes.
At frame 92 places, confirm the pump time of run of electric oil pump 12.The pump time of run refers to electric oil pump 12 and will how long turn round.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can be confirmed the pump time of run.For example, controller 60 can be confirmed the pump time of run of electric oil pump 12 based on the time length of the sensitive mode of HEV 14.In this example, controller 60 can confirm that electric oil pump 12 turns round with slow speed of revolution during the sensitive mode of HEV 14.After past, controller 60 may command electric oil pumps 12 turn round with new instruction rotating speed (the for example initial speed of electric oil pump 12) at the pump time of run.
At frame 94 places, the running of control electric oil pump 12.The running of pump controller 64 control electric oil pumps 12, it comprises the rotating speed of electric oil pump 12.In addition, at the pump time of run, pump controller 64 may command electric oil pumps 12 are with the instruction rotation speed operation.
As shown in Figure 3, flow process Figure 100 provides so that the method step of electric oil pump 12 runnings in the control HEV 14 according to an embodiment of the invention to be described generally.Except the step shown in Fig. 3, the logical device in the HEV 14 or controller is able to programme extra step is arranged so that extra function to be provided.Although a plurality of steps shown in flow process Figure 100 seem to take place with time sequence, at least some in these steps can different order take place, and some steps can be carried out simultaneously or not execution.Step among flow process Figure 100 can be used in the one or more steps among flow process Figure 80 (shown in Fig. 2).Equally, depend on the enforcement of the control method of electric oil pump 12 runnings, the step among flow process Figure 80 can be used for the one or more steps among flow process Figure 100.
With reference to figure 3, the various aspects of in the argumentation method, understanding this method with assistance with reference to HEV 14 and its assembly of explanation among the figure 1.Can or be programmed into the method for operation that the software program that is fit among the HEV 14 in the programmable logic device (for example other controller among controller 60, hybrid power control unit (HCU) 62, VSC/PCM 65, pump controller 64, the HEV14 and their combination) is carried out the electric oil pump 12 among the control HEV 14 through computerized algorithm, machine executable code.
At decision frame 102 places of flow process Figure 100, it confirms whether HEV 14 is in the motorized motions pattern.Controller 60 can confirm whether HEV 14 operates at the motorized motions pattern separately or with VSC/PCM 65 combinations.For example, controller 60 can confirm whether HEV 14 is just operating at the motorized motions pattern based on the elec. vehicle signal of the generation among the HCU 62.In addition, decision frame 102 can comprise the step corresponding to the frame 82 of flow process Figure 80.If HEV 14 is not in the motorized motions pattern, determine frame 104 to take place subsequently.Yet if HEV is in the motorized motions pattern, decision frame 106 takes place.
At decision frame 104 places, it confirms whether the driving engine among the HEV 14 is in starting state.For example, the rotating speed of driving engine can confirm whether the driving engine 16 among the HEV 14 is in starting state.Equally, when the rotating speed of driving engine 16 surpasses the desired speed threshold value, can think that driving engine 16 is in starting state.Alternately, the state that can confirm driving engine 16 is to confirm whether the driving engine 16 in the HEV 14 is in starting state.Controller 60 can be based on confirming from the signal of ECU 44, TCM 68 and/or VSC/PCM 65 whether the driving engine 16 in the HEV 14 is in starting state.If the driving engine 16 in the HEV 14 is in starting state, take place with after-frame 108.Yet,, determine frame 110 to take place if the driving engine 16 in the HEV 14 is not in starting state (for example work as driving engine 16 and be in closed condition).
At decision frame 106 places, it confirms in drive axle 22, whether there is high relatively temperature.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can confirm whether there is high relatively temperature in the drive axle 22 separately or with the VSC/PCM65 combination.Controller 60 can be confirmed the high relatively temperature of existence in the drive axle 22 based on other temperature levels or their combinations that produce heats in the temperature of the drive axle machine oil in the temperature levels of driving engine 16, the oil pan tray 54, the temperature, power supply cooling system conditioner, indication drive axle 22 of power supply changeover device in the HEV 14.For example,, the temperature of drive axle machine oil has high relatively temperature in the drive axle 22 when surpassing the temperature between 80～180 ° of F.If there is not high relatively temperature in the drive axle 22, determine frame 112 to take place subsequently.Yet, if there is high relatively temperature in the drive axle 22, with after-frame 114 take place and control electric oil pump 12 with high rotation speed operation.
At frame 108 places, control electric oil pump 12 is to closed condition.The changeable electric oil pump 12 of controller to closed condition or keep electric oil pump 12 and be in closed condition.For example, controller 60 may command electric oil pumps, 12 to 0 rotating speeds or predetermined idling (wherein electric oil pump 12 uses are from the low relatively energy of HEV 14).
At decision frame 110 places, it confirms whether there is high relatively temperature in the drive axle 22.Be similar to decision frame 106, controller 60 can confirm whether there is high relatively temperature in the drive axle 22 based on one or more temperature indicators separately or with VSC/PCM 65 combinations.If there is high relatively temperature in the drive axle 22, with after-frame 114 take place and control electric oil pump 12 with high rotation speed operation.Yet, if do not exist high relatively temperature to determine frame 116 to take place in the drive axle 22.
At decision frame 112 places, whether its previous operative condition of confirming HEV 14 is radical.Controller 60 can confirm whether the previous operation mode of HEV 14 is radical separately or with VSC/PCM 65 combinations.Controller 60 can be based on rotating speed, the motor rotary speed ω of driving engine 16
Mot, motor torsional moment τ
Mot, generator speed ω
Gen, generator torque τ
Gen, HEV 14 outsides ambient temperature or their combination confirm whether previous operation mode is radical.For example, radical operation mode can be indicated previous driving circulation high relatively motor of experience and/or the generator torque (τ of HEV 14
Mot, τ
Gen).In another example, the radical operation mode of the relative high ambient temperature definable HEV14 of high relatively moment of torsion in the HEV 14 and HEV 14 outsides.If the previous operation mode of HEV 14 is radical, determine frame 122 to take place subsequently.Yet, if the previous operation mode of HEV 14 does not take place for the radical frame 124 that determines.
At frame 114 places, control electric oil pump 12 is with high rotation speed operation.The running of pump controller 64 control electric oil pumps 12, it comprises the rotating speed of electric oil pump 12.For example, controller 60 can transmit (it can comprise the HCU 62 that communicates by letter with pump controller 64) signal to the pump controller 64 of the instruction rotating speed that has electric oil pump 12.Pump controller 64 receives this signal so that with instruction rotation speed operation electric oil pump 12.For example, the instruction rotating speed can be 15 liters/minute with operation of electrically driven oil pump 12 under high rotating speed.In another example, the high rotating speed of electric oil pump 12 can be the maximum speed of electric oil pump 12.Alternately, the high rotating speed of electric oil pump 12 can be the rotating speed in the high engine speed range in the memory device that is stored in controller 60.Whether this high rotating speed can be selected in high engine speed range based on existing high relatively temperature and/or HEV 14 whether to be in the motorized motions pattern in the drive axle 22.
At decision frame 116 places, whether its previous operation mode of confirming HEV 14 is radical.The function of decision frame 116 is corresponding to the function of decision frame 12.If the previous operation mode of HEV 14 is radical, take place with after-frame 118.Yet,, take place with after-frame 108 if the previous operation mode of HEV 14 is not radical.
At frame 118 places, the minimum time that the pump time of run of electric oil pump 12 is set to be scheduled to.Predetermined minimum time is radical corresponding to the assembly in cooling and/or the lubricated HEV 14 (for example power separates driving device 24, electro-motor 28, electrical generator etc.) to the previous operation mode with HEV 14 and Mechanical Driven oil pump 46 is in the required time of the corresponding to level of closed condition.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can be confirmed the pump time of run based on predetermined minimum time.Controller 60 can be based on producing other temperature levels of heat in the drive axle machine oil in the previous operation mode that is used for confirming HEV 14 and driving engine 16, the oil pan tray 54, the temperature levels, indication drive axle of power supply changeover device, power supply cooling system conditioner in the HEV 14 or the multiple parameter of their combination is calculated predetermined minimum time.Predetermined minimum time can be stored in the memory device of controller 60.
At frame 120 places, control motor oil pump 12 turns round with slow speed of revolution at the pump time of run.Pump controller 64 can control motor oil pump 12 rotating speed and the time of run of electronic oil pump 12.Controller 60 (it can comprise the HCU 62 that communicates by letter with pump controller 64) can transmit signal to the pump controller 64 that has instruction rotating speed and pump time of run.Controller 60 can realize being used for cooling and/or the lubricated energy of drive axle 22 and from battery 18 be used to turn round predetermined balance or the slow speed of revolution or the low rotating speed that instructs that ratio is confirmed electric oil pump 12 of energy of the electrical equipment in the HEV 14 based on the rotating speed of confirming electric oil pump 12.Pump controller 64 receive signals with between in the running with instruction rotation speed operation electric oil pump 12.
At decision frame 122 places, it confirms whether HEV 14 operates at sensitive mode.Controller 60 can be based on the multiple operating parameters of HEV 14 (the for example rotating speed of driving engine 16, motor rotary speed ω
Mot, generator speed ω
GenAnd other interior parameter of the HEV of the NVH that can significantly discover or experience of the passengers in the indication HEV 14 14) confirms whether HEV 14 operates at sensitive mode.If HEV 14 operates at sensitive mode, take place and control electric oil pump 12 to turn round with slow speed of revolution with after-frame 120.Yet, if when HEV 14 does not operate at sensitive mode, with after-frame 126 take place and control electric oil pump 12 with medium rotation speed operation.
At decision frame 124 places, it confirms whether the drive axle machine oil in the oil pan tray has the temperature that is lower than predetermined threshold.For example, the predetermined threshold value temperature can be the 0-30 ° of temperature between the F.The temperature of the drive axle machine oil in the oil pan tray 54 can be described as drive axle oil temperature (TOT).Controller 60 can make up the indication that obtains TOT separately or with TCM 68 and/or VSC/PCM 65.For example, oil pan tray 54 can comprise the drive axle machine oil that sensor flows with sensing in drive axle 22 temperature to obtain the indication of TOT.Controller 60 can directly obtain TOT obtains TOT with the sensors in oil pan tray 54 indication from oil pan tray 54 interior drive axle machine oil.If the drive axle machine oil in the oil pan tray 54 has the temperature that is lower than predetermined threshold, take place with after-frame 126.Yet,, determine frame 122 to take place if the temperature of the drive axle machine oil in the oil pan tray 54 does not have the temperature that is lower than the predetermined threshold value temperature.
At frame 126 places, control electric oil pump 12 is with medium rotation speed operation.Pump controller 64 can be controlled the running of electric oil pump 12, and it comprises the rotating speed of electric oil pump 12.For example, controller 60 can transmit (it can comprise the HCU 62 that communicates by letter with pump controller 64) signal to the pump controller 64 of the instruction rotating speed that has electric oil pump 12.Pump controller 64 receives signal so that with instruction rotation speed operation electric oil pump 12.For example, instruction speed can be 8 liters/minute so that with medium rotation speed operation electric oil pump 12.In another example, the medium rotating speed of electric oil pump 12 can be the middle speed of electric oil pump 12.Alternately, the moderate velocity of electric oil pump 12 can be the speed in the moderate velocity scope in the memory device that is stored in controller 60.Can confirm medium rotating speed based on the TOT in the NVH level in the HEV 14, the HEV 14, previous operation mode or their combination of HEV 14.
At frame 128 places, can obtain temperature, operation mode and loss.Controller 60 can have the signal of such information to obtain one or more in these parameters through other CALCULATION OF PARAMETERS or through receiving embedded or coding.Temperature, operation mode and loss be can obtain and proper lubrication and/or cooling in the drive axle 22 guaranteed with the running of repeatedly controlling the electric oil pump 12 in the HEV 14 and when HEV 14 experience different situations and/or the environment.
Although explained and described embodiments of the invention, and do not mean that these embodiment explanations and described the possible form of institute of the present invention.But the vocabulary that uses in the specification sheets is unrestricted as illustrative vocabulary, and is can do multiple change not breaking away under essence of the present invention and the scope with should be understood that.
Claims (10)
1. a control has the method for the running of the electric oil pump in the hybrid electric vehicle (HEV) of driving engine and drive axle, and said drive axle has electro-motor, and said method comprises:
, driving engine controls said electric oil pump when being in closed condition with the instruction rotation speed operation.
2. the method for claim 1 is characterized in that, further comprise confirm the pump time of run and control said electric oil pump at said definite pump time of run with said instruction rotation speed operation.
3. the method for claim 1 is characterized in that, further comprises the operating mode of definite said HEV and confirms said instruction rotating speed based on the operating mode of said HEV.
4. method as claimed in claim 3 is characterized in that, further comprises based on said HEV whether operating at the operating mode that the motorized motions pattern is confirmed said HEV.
5. method as claimed in claim 3 is characterized in that, further comprises the operating mode of confirming said HEV based on the noise in the said HEV, vibrations and roughening (NVH) level.
6. method as claimed in claim 3 is characterized in that, further comprise based on the operating mode of said HEV confirm the electric oil pump time of run and control said electric oil pump at said definite electric oil pump time of run with said instruction rotation speed operation.
7. the method for claim 1 is characterized in that, further comprises the previous operation mode of definite said HEV and confirms said instruction rotating speed based on said previous operation mode.
8. method as claimed in claim 7 is characterized in that, further comprise based on the said previous operation mode of said HEV confirm the pump time of run and control said electric oil pump at said pump time of run with said instruction rotation speed operation.
9. method as claimed in claim 7 is characterized in that, further comprises based at least one confirms said previous operation mode in the previous rotating speed of said HEV and the output of the moment of torsion in the HEV.
10. the method for claim 1 is characterized in that, further comprises calculating the interior loss in efficiency of said HEV and confirming said instruction rotating speed based on said loss in efficiency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/870,924 US8649925B2 (en) | 2010-08-30 | 2010-08-30 | Method and system for controlling operation of an electric oil pump in a hybrid electric vehicle (HEV) |
| US12/870924 | 2010-08-30 |
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| Publication Number | Publication Date |
|---|---|
| CN102381313A true CN102381313A (en) | 2012-03-21 |
| CN102381313B CN102381313B (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110230901.6A Active CN102381313B (en) | 2010-08-30 | 2011-08-12 | The method for controlling electric oil pump operating |
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| Country | Link |
|---|---|
| US (1) | US8649925B2 (en) |
| CN (1) | CN102381313B (en) |
| DE (1) | DE102011081091A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110166727A1 (en) | 2011-07-07 |
| DE102011081091A1 (en) | 2012-03-01 |
| US8649925B2 (en) | 2014-02-11 |
| CN102381313B (en) | 2017-09-05 |
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